40367819 has 4 divisors (see below), whose sum is σ = 40821480. Its totient is φ = 39914160.

The previous prime is 40367813. The next prime is 40367827. The reversal of 40367819 is 91876304.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40367819 - 2⁸ = 40367563 is a prime.

It is a super-2 number, since 2×40367819² = 3259121621633522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40367813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 226697 + ... + 226874.

It is an arithmetic number, because the mean of its divisors is an integer number (10205370).

Almost surely, 2^40367819 is an apocalyptic number.

40367819 is a deficient number, since it is larger than the sum of its proper divisors (453661).

40367819 is an equidigital number, since it uses as much as digits as its factorization.

40367819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453660.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 40367819 is about 6353.5674231096. The cubic root of 40367819 is about 343.0402619427.

The spelling of 40367819 in words is "forty million, three hundred sixty-seven thousand, eight hundred nineteen".